body, h1, h2, h3, h4, h5, h6, hr, p, blockquote, dl, dt, dd, ul, ol, li, pre, form, fieldset, legend, button, input, textarea, th, td { margin:0; padding:0; }
h1, h2, h3, h4, h5, h6{ font-size:100%; }
address, cite, dfn, em, var { font-style:normal; }
code, kbd, pre, samp { font-family:couriernew, courier, monospace; }
small{ font-size:12px; }
ul, ol { list-style:none; }
a { text-decoration:none; }
a:hover { text-decoration:underline; }
sup { vertical-align:text-top; }
sub{ vertical-align:text-bottom; }
legend { color:#000; }
fieldset, img { border:0; }
button, input, select, textarea { font-size:100%; }
table { border-collapse:collapse; border-spacing:0; }
a:link,a:visited{
    text-decoration:none;  /*超链接无下划线*/
}

.index_top{
    width: 100%;
    height: 50px;
    background-color: mediumvioletred;
    text-align:center;
}
.index_ul{
    margin-top: 11px;
}

.index_ul li{
    float:left;
    padding-left: 49px;
    font-size: 18px;
    color: white;
}
.index_log{
    margin-top: 11px;
}
.index_log a{
    font-size: 17px;
    color: white;
}
